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Howlett" , Matthew Wilcox , Vlastimil Babka , "Paul E . McKenney" , Jann Horn , David Hildenbrand , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Muchun Song , Richard Henderson , Matt Turner , Thomas Bogendoerfer , "James E . J . Bottomley" , Helge Deller , Chris Zankel , Max Filippov , Arnd Bergmann , linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-arch@vger.kernel.org, Shuah Khan , Christian Brauner , linux-kselftest@vger.kernel.org, Sidhartha Kumar , Jeff Xu , Christoph Hellwig , linux-api@vger.kernel.org, John Hubbard Subject: Re: [PATCH v3 3/5] mm: madvise: implement lightweight guard page mechanism Message-Id: <20241023161205.003ad735d5f6ec50ec2eb054@linux-foundation.org> In-Reply-To: <415da1e6c5828d96db3af480d243a7f68ccabf6d.1729699916.git.lorenzo.stoakes@oracle.com> References: <415da1e6c5828d96db3af480d243a7f68ccabf6d.1729699916.git.lorenzo.stoakes@oracle.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: 3C9B2C001B X-Stat-Signature: 8tbn4ntcbsh5t56nzbygh4nkr3b6jozc X-HE-Tag: 1729725121-115199 X-HE-Meta: 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 //fz3ji+ JLWjdGG+CUtSMFi4wsBFfQK9g5Bol6hm1TgOSUseixP9EmsxQkBq2KajXXNB2ACKslU+Es007Xe5pdsj2fj32oq/kfya0eKTltstyQzRBKofZmbuIH7cd+8Rbg7RqXtFJDH575G/onJCS5bVaC78kME30pxz3SYSwUUptQgoKpQdnIii2a/IRIdY50PgrNpfj/ceNhXm2SD11ovlgSmfG84TqEDiWVcaEElbW2LdP0j6NBDhqb0yAORGNFvUTbRyvgBPlJRbkFmJ5gXhyc9admakpOQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 23 Oct 2024 17:24:40 +0100 Lorenzo Stoakes wrote: > We permit this operation on anonymous memory only What is the reason for this restriction? (generally, it would be nice to include the proposed manpage update at this time, so people can review it while the code change is fresh in their minds)